Penn State's leading scorer from last season, Carr picked up where he left off and scored 33 points, grabbed nine rebounds and handed out seven assists.
Chris Clemons, the 5-foot-9-inch preseason Player of the Year in the Big South, and the nation's leading returning scorer at 25.1 points per game, paced the Fighting Camels (0-1) with 39 points.
The Nittany Lions (1-0), who endured a disappointing 15-18 campaign last season, are a veteran group and it showed on Friday.
With a chance to essentially put the game away early in the second half, the Nittany Lions pounced on the opportunity by outscoring the Fighting Camels 10-3 in the first four minutes to open up a 46-31 lead.
After the margin grew to 17 points at 61-44, the Fighting Camels staged a comeback and got to within six when center Mogga Lado's tip-in made the score 61-55 with just over six minutes left in the game.
But the Nittany Lions scored the next six points to open up another double-digit lead. Campbell made one last run and cut the deficit to seven on a 3-pointer by Damontez Oliver with 1:28 left in the game.
Clemons followed with a layup and the Fighting Camels trailed 75-70 with less than a minute to go.
Carr answered with a layup and free throw and then sank two more free throws on Penn State's next possession to seal the game.
Campbell, which went 19-18 overall last season and reached the CIT semifinals, went toe-to-toe with Penn State in the first half. Clemons connected on a 3-point jumper to tie the game at 20 with just under seven minutes to go.
Carr followed with a pair of free throws to ignite a 16-8 run that gave the Nittany Lions their eight-point lead at intermission.